THE CANADIAN ENTOMOLOGIST 115 



middle along iho margin; membranous margins along apical ihird of first plate 

 and all of the second, broad, dark testaceous; third tergite and beyond very 

 smooth and shining; ovipositor subexserted. 



Males. — Agrees well with the female except for the usual sexual differences. 



Type locality. — Lunenl)urg, Mass. Cocoon mass with the host larva 

 firmly attached collected by Mr. S. M. Dohanian, of the Bureau of Entomology. 

 Paratype localities. — ^Exeter, N. H.; Pelham, N. H.; Bristol, R. I. 



Type.—G\^. Moth Lab. No. 10697AK. Deposited in U. S. Nat. Mus. 

 Type No. 22094 U. S. N. M. 



Host. — Evidently a species of Ilypoprepia. 



Described frorii 24 specimens (13 females; 11 males) bred at the Gipsy 

 Moth Laboratory, Melrose Highlands, Mass. 



Cocoons are pure white, thin, clustered together, and usually firmly cemented 

 to the under side of the host caterpillar. 



Resembles very closely A. sarrothripa Weed, but the latter has a much less 

 punctate and a highly polished mesoscutum and scutellum; the apical flagellar 

 segments of the female antennse are much longer than broad and much more 

 slender than in the present species; the hind coxae are reddish black rather than 

 black; and the abdomen has more or less reddish on the segments posterior to 

 the second, while in the present species the dorsum of the abdomen is entirely 

 black; also, the venter of the abdomen is more testaceous in sarrothripce, and the 

 second abdominal tergite is broader at base so that the lateral margins are 

 less oblique; the venation of the anterior wings also differs, in that the radius 

 and the transverse cubitus meet in a sharp angle in sarrothripce. From the 

 species phigalice, described above, compressus may be distinguished by the much 

 narrower and more compressed abdomen, by the yellowish fore and middle 

 coxae, by the rougher propodeum, and by the cocoons. 



Meteorus triangularis, n. sp. 



Female. — Length 5 mm. Head yellowish; eyes black; antennae yellowish 

 red; stemmaticum black. Prothorax, meso- and metapleurse yellowish red; 

 mesonotum yellow except the lateral lobes, which are black; scutellum yellow; 

 pcstscutellum blackish; propodeum black, except the apical angles, which are 

 reddish. 



Legs entirely yellowish, except the hind tibiae, which have a dusky annulus 

 near the base and another at the apex, and the hind tarsi, which are dusky. 

 Wings hyaline, stigma and veins brownish, the stigma without the dark spot 

 found in some species of the genus; the recurrent vein interstitial with the first 

 transverse cubitus; tegulae and wing-bases yellow. 



Abdomen blackish brown above, except the extreme base of the first tergite, 

 which is yellowish, and a yellowish-brown triangular spot at the base of the 

 second tergite, which extends across the entire plate, but is very narrow laterally; 

 the first tergite is longitudinally aciculated on the apical two-thirds or more, 

 which part is black in colour; the deep fossa?, which are found on the upper side 

 of the petiole of a number of species of Meteorus, are wanting in this form. 

 Ovipositor half the length of the abdomen. 



~ Male. — Resembles the female except for sexual differences. 



Type locality .—Mass. (?) 



